isrc
Grand Canyon National Park - Arizona. 1,217,403.32 acres. Carved out by the Colorado River, the canyon is 277 miles long, up to one mile deep and up to 15 miles wide. Millions of years of exposure has formed colorful layers of the Colorado Plateau in mesas and canyon walls.

Hercio Dias
The largest canyon in the solar system, called Valles Marineris, cuts a wide swath across the face of Mars. The grand valley extends over 1,864 miles , up to 373 miles across, and as much as 8 km deep. - Credit: Viking Project, USGS, NASA

paige
Off the famous Route 66 lies "Indian 18," a 65-mile-long, completely undeveloped road that leads to Hualapai Hilltop in the Grand Canyon. Once there, it's another ten miles hiking to reach the astounding Havasupai Village and Havasu Falls—the latter which possesses water so vibrantly turquoise that it seems unbelievable.

proteamundi
The largest canyon in the Solar System cuts a wide swath across the face of Mars. Named Valles Marineris, the grand canyon extends over 3,000 kilometres long, spans as much as 600 kilometres across, and is as much as 8 kilometres deep. By comparison, Earth's Grand Canyon is 800 kilometres long, 30 kilometres across, and 1.8 kilometres deep. The origin of the Valles Marineris remains unknown, although a leading hypothesis holds that it started as